It has 3 sets of D-rings down the back, a crotch strap and a strap for
the arms. It also has a strap in front to prevent the arms from being pulled
over the head. It is made of Heavy duty 10 oz. duck cloth canvas. The entire
piece is sewn together using upholstery thread. Stitching is reinforced for
strength. Heavy duty Dee rings and snaps are made of nickel plated
steel.